DCN Lab Slot Die Coater
Six Sigma is a quality control system utilized for everything from discrete parts to organizational efficiency.
The question is: How do you best utilize Six Sigma to reduce web defects?
Utilization in the converting industry hinges on applying discrete measures to a continuous product.
Applications can be as varied as optical film coating to adhesive tape source />Regardless of the product being made, Six Sigma can be applied to web-coated products.
SIX SIGMA Like the scientific slot die coating troubleshooting, Six Sigma follows a road map: Define, Measure, Analyze, Improve, and Control the problem.
Six Sigma is derived from the standard deviation, a statistical analysis parameter, and is defined as defect levels below 3.
It is important that the defect and the opportunity are correctly defined or the measurement is useless.
Six Sigma doctrine holds to continuous efforts to achieve stable results that are of vital importance to business success; manufacturing processes have characteristics that can be affected; and achieving sustained quality improvement requires commitment from the entire organization.
Entitlement is a stretch goal defined by the subject matter experts.
This goal should have a continuous process focus but a discrete product plan.
The measurement needs to focus on improving the performance of the product within the confines of the process.
It is important that the human side of the operation is understood.
Team buy-in from the top down and the bottom up is critical.
For a new product on an existing line, the borders of the process and materials need to be the constraints for the product.
Ultimately, for a new product with an unidentified process, the world is wide open which may be a blessing or a curse.
The process map needs to be drawn up regardless of the product constraints.
This is a unit operations diagram taking into account human interaction with equipment, raw material variations, and measurement system limitations.
Measure The key consideration in measuring a web process is the final product use.
In theory, each discrete widget can be measured for quality if the test is not destructive.
Not so with a continuous web.
Improvements can be made at the main variable locations to reduce defects and improve quality.
One simple example is to slot die coating troubleshooting idler rolls of different diameters grouped by sections throughout the process.
Therefore, if you see a repeating defect, you can isolate it to the section of the correlating diameter.
The material characteristics to be measured include viscosity.
The issues typically downweb in form include contamination, air entrapment, slot die coating troubleshooting temperature control.
The material characteristics to be measured include surface energy and substrate manufacturing data.
The issues typically downweb in form include wrinkles slot die coating troubleshooting debris.
Communication with slot die coating troubleshooting upstream provider of slot die coating troubleshooting is critical in understanding what is available for use.
The material characteristics at this point are a function of the roll throughput yield failures combined up to this point in the process of the interfaces.
The issues typically crossweb in form include air entrainment and edge effects.
In the coating head, interfaces are the name of the game.
Fluid distribution within the coating station can be simulated prior to manufacturing or operation.
In a production setting, the improvement of edge effects needs to be balanced against the overall cost of waste.
Issues include temperature control, rate of cure, and effect on substrate.
There are various cure methods and each has different effects.
A preventive maintenance schedule helps maintain stability of an operation.
This slot die coating troubleshooting monitoring the incoming substrate, fluid, coating head, and the outgoing web, in realistic slots ipad to ensuring the measurements capture crossweb, downweb, and machine chatter defects.
Remember continuous changes and defects occur over time, so steady state operation is important to accurate measurement and reaction.
Analyze Analysis of the variables causes and the effect on the defects is the next step.
Once the subject matter experts have identified what to measure to improve product performance, it is again time to get management on board.
A key issue is the time it will take to measure the process accurately.
An example is when a consumable backing roll was made to order and had a limited lifespan.
Although this Six Sigma project took months to analyze, the root cause go here identified, and the problem was solved.
We need to narrow the scope so the team can identify the unit operation upon which to work.
DOE allows focus on the identified variables.
In a 2 5-1 factorial design, all five variables can be studied with minimal work.
Process journals allow previously unidentified variables to uncover new root causes.
A critical idea is Roll Throughput Yield RTYwhich is defined as the combined variability of the process.
I worked with a coater that had a product within spec for the discrete sample but in roll form had a hard band that made it unacceptable.
This caliper variation did not show until the on-line gauge and process journal pointed the engineer in the right direction.
Control The goal has been met for product improvement and the changes need to be implemented.
This stage usually means a redefinition of the product and process.
Remember to utilize the Six Sigma methodology and identify the important differences when you consider webs over widgets.
Today, Mark and Tim Marion own and operate Coating Tech Slot Dies, which supplies precision coating equipment.
In addition, CTSD provides education and consultation for improved coating efficiencies and increased coating capability.
Mark is a contributing editor to several industry trade journals and a frequent technical presenter at both domestic and international industry events.
Shanghai Yuze Electromechanical Equipment Co.
freeOPV organic solar cell - Slot-die coating the ZnO layer
Coating Tech is a slot die manufacturing company and coating consulting firm providing precision manufactured slot dies, exceptional process engineering and on-site service to a wide variety of clients such as hot melt, battery, solar and optical coating companies.
Очунь радует читать такое именно у вас!! Спасибо. icemen.ru – Лучшие!! (Здесь у какого-то умельца спамилка умеет вставлять адрес нужного сайта, а слово “очень” с ошибкой написал)
Извините, что я Вас прерываю, но мне необходимо немного больше информации.
не-не-не-не-некогда мне тут с Вами общаться, пойду травки дуну
Интересно, я даже и недумала об этом…
Не уделите мне минутку?
Да, я вас понимаю. В этом что-то есть и мне кажется это отличная мысль. Я согласен с Вами.
Да, проблема описанная в посте существует уже давно. Но кто ее будет решать?
Идея отличная, согласен с Вами.
Я об этом ничего не знаю
Разработан женский Windows 98. К кнопкам «да» и «нет» добавлена третья: «может быть».
мысли здравые, но тяжело читать, не знаю почему.
да это точно, тема спама цветет и пахнет :)
По моему мнению Вы не правы. Я уверен. Давайте обсудим это.
Вы не правы. Я уверен. Предлагаю это обсудить. Пишите мне в PM, пообщаемся.
Конечно. Всё выше сказанное правда. Можем пообщаться на эту тему. Здесь или в PM.
Я думаю, что Вы не правы. Я уверен. Могу это доказать.
Поздравляю, отличная идея и своевременно
Абсолютно с Вами согласен. Я думаю, что это отличная идея.
Было бы желание, остальное встанет.
Пора взяться за ум. Пора придти в себя.
Это — скандал!
Надеюсь, всё нормально